Improvement in jam-nuts



WILLIAM H. VAN cLEvE.

Improvement in Jamb Nuts.

PatentedfNov. 7,1871..

NITED 'STATES d WILLIAM H. VAN OLEVE, 0F YPSILANTI, MICHIGAN.

IMPROVEMENT IN JAM-NUTS.

Speciioation forming part of Letters Patent No. 120,798, dated November'7, 1871.

To all (whom it may concern:

Be it known that I, WILLIAM E. VAN GLEVE, of Ypsilanti, in the county ofWashtenaw and State of Michigan, have invented a new and usefulImprovement in Metal-Gased Wooden Jam- Nuts; and I do declare that thefollowing is a true and accurate description thereof, reference beinghad to the accompanying drawing and to the letters of reference markedthereon and being a part of this specification, in which my device isshown in perspective on a track-bolt.

This invention has for its object to provide a reliable jam-nutapplicable wherever iron nuts are used for that purpose, at a fractionof their cost. The invention consists in a simple nut made of wood,either with or without a screwthread cut in it, and incased in a lightmetallic hoop or binding, as more fully hereinafter set forth.

In the drawing, A represents a rectangular wooden nut incased in a lightmetallic frame, A, which, for obvious reasons, is preferably made ofmalleable cast-iron, although other metals may be used. In manysituations it would be advisable to treat the nut by boiling it intallow or oil, or by any of the known chemical processes for preservingit. The wood should be of some -of the varieties which combine toughnesswith tendency to split such as rock elm, pepperidge, buttonwood, t c. Itis not necessary to cut the threads in the nut, as when it is screwed onthe bolt the latter embeds its thread in the opening ofthe nut when thelatter is forcibly screwed on. rlhe band may be shrunk on the nut, orthe latter driven into the former, in either case the nut will beprevented from splitting. B represents a track-bolt; and C, its ironnut, which is prevented from being loosened by the vibration of passingtrains on the rail in which it is placed by my wood en j alu-nut, whichanswers the purpose as well as an iron nut at less than one-half thecost.

As a jamb-nut it is superior to one made of metal, as the elasticity ofthe wood, as is well known, tends to absorb vibration, while theadhesion between the two threads is greater by reason of the elasticityof the wood.

I claiin As a new article of manufacture, the wooden jam-nut A, hoopedor incased with a metallic band, A', as described.

WILLIAM H. VAN GLEVE.

P. F. BARRY. (14)

